Gas-holder.



No. 684,849,. Patented Oct. 22, I90l. J. ST. L. McGlNN.

GAS HOLDER.

(Application filed Jan. 20, 1899.)

(No Model.)

m: NORRIS wcrzns cu. PHaTo-Lwuo. WASBINGYON, u. c.

NITED STATES JOHN ST. LEGER MCGINN, OF WINNIPEG, CANADA, ASSIGNOR TOCHARLES PATENT OFFICE.

CUSHING HOLLAND, TRUSTEE, OF MONTREAL, CANADA.

GAS-HOLDER.

SPECIFICATION forming part of LettersPatent No. 684,849, dated October22, 1901. Application filed January 20,1899. Serial No. 702,831. (it.inodel.)

To all whom it may concern: I

Be it known that I, J OHN Sr. LEGER MCGINN, of the city of Winnipeg, inthe Province of Manitoba, Dominion of Canada, have invented certain newand useful Improvements in Gas-Holders; and I do hereby declare that thefollowing is a full, clear, and exact description of the same.

y invention relates particularly to acetylene-gas holders; and it hasfor its object to provide a holder that will be exceedingly simple toconstruct and free from danger and that Will not have an exposed waterseal, while the exposed surface of the seal within the gas-holder isreduced to a minimum, and consequently the evaporation thereof will becorrespondingly reduced.

The invention may be said, briefly, to consist of an expansile chamber,a casing inclosing said expansile chamber and containing a sealtherefor, a communicating passage between said chamber and casing, saidpassage being normally closed, but adapted to connect said chamber andthe interior of the casing at the time said chamber expands toamaximumdegree, a constantly-open blowofi passage from said casing tothe open air, and a pair of gas-conducting pipes leading, respectively,to and from'said chamber.

For full comprehension, however, of my invention reference must be hadto the accompanying drawings, forming a part of this specification, inwhich like symbols indicate the same parts, and wherein- Figurel is aside elevation of my improved holder Fig. 2, a transverse verticalsectional View thereof, taken on line 2 2, Fig. 1.

My improved holder consists of an inclosing'casing in which agas-receiving drum 6 is located,'this drum being of the usual domeformand fits over a second dome-like structure 7, the lower edgeswhereof are connected by an annular diaphragm 8 to the lower edge of theinclosing casing. This casing is constructed in two parts 5 and 5. Theupper part 5 has an encircling bead 40 near the lower end thereof. Infitting the parts together the lower edges of the upper part are slippedinto the upper end of the lower part 5 until said bead comes intocontact with the edge of said upper end, and a strip 41 is soldered atits upper and lower edges, respectively, to said bead and the upper endof the part 5.

A vertical tubular section 9 is formedcentrally of the innermost domeand communicates by a horizontal pipe 10 with the lower end of the spacebetween said inner dome and outer casing. The drum has a tube 12extending from a central opening in the top thereof downwardly into thetubular passage formed by said tubular section 9, to which itapproximately corresponds in length, and said tube 12 has a pair ofholes 30 near the lower end thereof.

The gas-conducting pipe 14 from the gen= erator (not shown) is takeninto the inclosing casing at a point below the diaphragm 8 and upwardlythrough the innermost dome-like structure and through the top thereof tocommunicate with the space between said structure and the drum. Thewater for sealing purposes is supplied to the space between the saidstructure and the outer casing through a pipe 15, formed on the exteriorof the casing and leading from the lower end of said space upwardly to apoint about on a level with the point at which it may be desired to keepthe water seal. A holder as thus constructed will be found to containmany advantageous features, in fact, all that can be desired; but Iprefer to augment same by providing means whereby the means for causingthe carbid and water to combine can be actuated by the expansion andcontraction of the gas-chamber-i. 6., the chamberintermediate the drum 6and dome 7. To this end the outer casing 5 has a tube 13 extending froma central opening in the top thereof downwardly into the tube 12 to apoint a short distance below the top of the tubular passage 9. A rod 20is secured at its lower end to the lower end of the tube connected tothe drum 6 and projectsupwardly through the tube 13 and has a transversedisk 21 secured upon its upper end. H

A lever 22, having one end weighted, as at 28, is fulcrumed upon astandard 23, secured on the top of the casing, and has its inner endformed with a flared fork having prongs 24: and 25, the prong 25L beingpivot-ally connected to the lower end, as at 27, in such a way as toinsure a one-way movement thereof relatively to the lower end. Thisconstruction of the fork insures that the disk will pass clear of prong25 and engage the lower prong 2% as the gas-chamber in contractionapproaches its minimum capacity, while the upper prong 25 issimultaneously caused to extend over said disk to be engaged thereby asthe chamber expands and also that the -disk will clear said upper prong25 after the lever has been moved the required distance;

When the gas is completely exhausted from the gas-chamber, the disk willassume the position shown in dotted lines in Fig. 2 and in doing so willrelease the prong 24: and allow the weighted end of the lever to fall,while upon the chamber again expanding the disk will rise and trip uponsaid prong 24c and cause same through its pivotal connection with itslever to move out of its way. The outer end of the lever is connected bya rod 30 or in any other Way to the means (not shown) for causing thecarbid and water in the generator to combine.

What I claim is as follows:

1Q A holder for acetylene gas consisting of an inclosing chamber; aninterior dome-like structure; annular diaphragm connecting the loweredges of said inner dome and easing; a movable dome located between saidinner dome and'casing; a tubular section extending from an opening inand concentrically of the top of said inner dome, to the lower end ofthecasing; a horizontal pipe connecting the said tubular section to thespace between said inner dome and inclosing casing; a tube extendinginto said tubular section from an opening in the top of the movabledome; an

egress-pipe from said casing; a pair of gasconducting pipes leadingfromthe space 'between the tops of the inner and movable domesdownwardly and out of the lower end of the casing; and awater-conducting pipe outside of the casing and leading from a point ona level with the upper end of the side of the inner dome to andcommunicating with the lower end of the casing, substantially asdescribed and for the purpose set forth.

' 2. A holder for acetylene gas consisting of a divisible inclosingcasing; means for sealing the adjoining edges of the parts of Saidcasing; an interior dome-like structure; an annular diaphragm connectingthe lower edges of said inner dome and easing; a movable dome locatedbetween said inner dome and casing; a tubularsection extending from anopening in and concentrically of the top of said inner dome, to thelower end of the casing; a horizontal pipe connecting the said tubularsection to the space between said in ner dome and inclosing casing; atube extending into said tubular section from an opening in thetop ofthe movable dome; an

egress-pipe from said casing; a pairof gas conducting pipes leading fromthe space between the tops of the inner and movable domes downwardly andout of the lower end of the casing; and a water-conducting pipe outsideof the casing and leading from a point on a level with the upper end ofthe side of the inner dome to and communicating with the lower end ofthe casing, substantially as described and for the purpose set forth.

3. A holder for acetylene gas consisting of an inclosing casingconsisting of upper and lower parts 5, 5; a bead formed upon the lowerend of the upper part; an interior domelike structure 7; an annulardiaphragm 8 conmeeting the lower edges of said inner dome and easing; amovable dome 6; the tubular section the horizontal pipe 10; the tube 12having apertures 30; the tube 13; an egresspipe from said casing; a pairof gas-conducting pipes leadingfrom the space between the tops of theinner and movable domes downwardly and out of the lower end of thecasing; a rod secured at its lower end to the lower end of the tube 12and projecting upwardly through the top of the casing a transverse piecesecured to the top of said rod; a lever fnlcrumed upon the top of thecasing and adapted to be engaged by said transverse piece, substantiallyas described and for the purpose set forth.

4. A holder for acetylene gas consisting of an inclosing casingconsisting of upper and lower parts 5, 5*; a bead formed upon the lowerend of the upper part 5; an interior dome-like structure 7 an annulardiaphragm 8 connecting the lower edges of said inner dome and casing; amovable dome 6; the tubular section 9; the horizontal pipe 10; the tube12 having apertures 30; the tube 13; an egress-pipe from said casing; apair of gasconduoting pipes leading from the space between the tops ofthe inner and movable domes downwardly and out of the lower end of thecasing; a rod secured at its lower end to the lower end of the tube 12and project ing upwardly through the top of the casing; a transversepiece secured to the top of said rod; a forked lever 24-, 25, fulcrumedupon the top of the casing and adapted to be engaged by said transversepiece, substantially as described and for the purpose set forth;

5. A holder for acetylene gas consisting of a divisible inclosing casingconsisting of upper and lower parts 5, 5; a bead formed upon the lowerend of the upper part 5 and a removable strip encircling and overlappingthe line of juncture of said parts; an interior dome-like structure 7 anannular diaphragm 8 connecting the lower edges of said inner dome andeasing; a movable dome 6; the tubular section 9; the horizontal pipe'lO;the

tube 12 having apertures 30 the tube 13; an

egress-pipe from said casing; a pair of gascondncting plpes leading fromthe space hetween the tops of the inner and movable gaged by saidtransverse piece, substantially domes downwardly and out of the lowerend as described and for the purpose set forth. 10 a of the casing; arod secured at its lower end In testimony whereof I have affixed mysigto the lower end of the tube 12 and projectnature in presence of twoWitnesses.

ing upwardly through the top of the casing; JOHN ST. LEGER MGGINN. atransverse piece secured to the top of said Witnesses: rod; a forkedlever 24, 25, fulcrumed upon WILLIAM F. MOFEAT,

the top of the casing and adapted to be en- FRED. J. SEARS.

